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In this paper is developed a model for the wastewater treatment plant (WWTP) in Arad, Romania and are presents the results of the steady-state simulation. The model of the plant was based on the stateпїЅof-the-art Activated Sludge Model No.1 (ASM1). In this paper are describes all the steps required to model a waste water treatment plant. In addition, discuss the major challenges encountered in creating a model. It includes typical model simulations for assessment analysis facility. Modeling of wastewater treatmen...

This study presents the evolution of residual chlorine concentration in the water distribution network for a town with 10 000 inhabitants. The distribution system consists of a tank, pump station, 41 loops, 175 junctions and 166 pipes. The paper presents also a methodology for computing the residual chlorine concentration decay in water distribution system, over a 7 days period of time. Chlorine is injected at the tank, with a constant concentration of 0.5 mg/l. A variable water demand over a 168 hours period is i...